Door-bell.



am AU ouv 1 2., E N U TU D E T N E. .T A P m VL. EM MB R L RWD NAPPLICATION FILED DEG. 27, 1905.l

fur Nonkls Prrsks om. WANHNUNN, n. cA

NEVIN BUFFINGTON LE FEVRE, OF LONDON, ENGLAND.

DOOR-BELL.

Speccaton of Letters Patent.

Patented June 2, 1908.

Application filed December 27, 1905. Serial No. 293,464.

To all whom it may concern:

I In order that the bell may be caused to Be it known that 1, NEvrNBUFFINGTON 1 continue to ring after once the handle O has LE FEVRE, acitizen of the United States of l been turned to a suiiicient extent 1provide America, residing at 1 Cranworth Gardens, Brixton, London,England, have invented new and useful mprovements Relating toDoor-Bells, ol' which the following is a speci- 'ficatioir Thisinvention has reference to improvements relating to door-bells which areset in operation or sounded by turning the doorhandle, and it consistsin improved operating mechanism intermediate of the door handle and anordinary spring-actuated alarm bell having the usual knob the depressionor operation of which sets the bell ringing, mounting said belladjustably on a plate to be iixed to the door and `so that it may bereadily adjusted into or out of its operative position, the saidoperating mechanism, when the bell is in'its operative position,bringing about the ringing of the bell on the door-handle being turnedin either direction, and means whereby the bell may if desired be causedto continue ringing when the door-handle has been turned to a suiiicientextent.

Tn order that my invention may be readily understood I make reference tothe accompanying drawing in which:

Figure 1 shows my invention in front elevation, the parts being in theirnormal position, and Eig. 2 shows it as it appears when continuousringing of the bell is required.

1n said drawing A indicates an ordinary spring or cycle bell having aknob B or equivalent the depression of which sets the bell ringing as isusual with this class of bell. Said bell may be fixed to the inner sideoi a door or to a late D attached to said door so as to be in c oseproximity to the handle C which is indicated by dotted lines.

On the spindle E of the door handle I mount a plate or lever F whoseouter or free end is made more or less flat and is formed with a iiangef which is in contact with the knob B. The shape of said iiange is suchthat whether the handle C be turned in one direction or the other saidliange will raise the knob B and set the bell ringing. When the handleis released and returns to its normal position the bell will ceaseringing.

a spring bolt G which is pressed upwards by a spring not suflicientlystrong to depress the knob B but which spring will push the bolt upwardswhen` the handle has been turned, so as to engage at one side of theknob as shown in Fig. 2 the iiange f now depressing the knob B while thebolt G prevents the return of the parts to their normal position. Thebolt G has a handle H whose shank passes through a slot j, j, in thebolt case 7c so that if the continuous ringing oi' the bell be notdesired said shank is engaged in the part of said slot, as shown in Fig.1, but when a continuous ringing of the bell is desired the handle H ismoved so that its shank enters the vertical part y" of the slot andthereby permits the bolt G to be pushed upwards when the door handle isturned.

My invention may be applied to street, office or bed-room doors. For thetwo ,former a simple form, without the bolt G would usually besuficient, but Jfor bedroom doors the construction substantially asdescribed and illustrated would usually be preferable.

The bell is preferably fixed to the door or to the plate D by screws L,L one of which (L) passes through a curved slot S in a plate N orthrough the plate D by which the bell is carried and the other through astraight slot in said plate so that, say, when leaving the bed-room inthe morning the bell may be moved away from the lever E so that its knobB will not be operated on turning the door handle.

1 wish it to be understood that I do not confine myself to use anyparticular kind of bell, for example, if for some special reason it bedesirable, a bell may be employed which will only give a single soundwhen operated or a bell which, when operated, will continue of itself toring until stopped `from within the room.

What I claim as my invention and desire to secure by Letters Patent isThe combination with a door-handle of a plate lixed to the door, anordinary springactuated alarm bell mounted adjustably on the said plateand having an operating knob the depression of which sets the bellringing, an arm mounted on the door-handle spindle, a ilange formed onthe free end of the said arm adapted to aot upon the operating knob ofthe bell when the handle is turned in either direction, and aspring-bolt NEVIN BUFFINGTON LE FEVRE. Witnesses:

HENRY IMRIE, H. D. JAMESON.

